A couple of years old, but a useful summary of some of the US Army's long range fires efforts, all oriented around radically extended reach for precision engagement of targets 
Land Based Anti-Ship Missile (LBASM) repurposes the MGM-140 Army Tactical Missile System (ATACMS) to allow HIMARS and MLRS to engage ships. Not to be confused with the Navy's Long Range Anti-Ship Missile (LRASM). PrSM also being worked on as an option for the anti-ship role.
Single Multi-mission Attack Missile (SMAM) is a 35km range precision loitering munition. SMAM includes a self-contained launch tube and portable mast-mounted antenna. Total weight including the missile of 50-70lbs and controlled from a tablet relaying video feed
Multiple Simultaneous Engagement Technologies (MSET) is a kit that for manned/unmanned ground vehicles & aicraft to allow direction of multiple loitering precision missiles. In 2016 demosntrated fire & control of 6 loitering missiles against 4 static targets and 2 moving targets
Extended Range Cannon Artillery (ERCA) is a new 155 howitzer based on the M109 seeking much longer range. Live fire trials in March showed succesful hits at 65km. 6 Batteries to be fIelded from FY23.
Low Cost – Tactical Extended Range Missile (LC TERM) is a 60-499km tactical missile. Selectable engagement of both area and point target in a single warhead and removing reliance on GPS for precision engagement.
Long Range Maneuverable Fires (LRMF) is a long term programme (2030+) to get a maneuvering long range multi-stage missile
The chart didnt include the Precision Strike Missile (PrSM), which is an ATACMS successor with 2 missiles per pod, 499km+ missile with greater accuracy. FRP due Q3 FY24
UK recently expressed a formal interest in working with US on long range fires, especially PrSM and the LRPF programmes.
